A set of zero or more names that can be used to more easily reference the attribute type.

An optional equality matching rule that specifies how equality matching should be performed on values of that attribute. If no equality matching rule is specified, then the default equality rule for the associated attribute syntax will be used. If the associated syntax doesn't have a default equality matching rule, then equality operations will not be allowed for that attribute.

An optional ordering matching rule that specifies how ordering operations should be performed on values of that attribute. If no ordering matching rule is specified, then the default ordering rule for the associated attribute syntax will be used. If the associated syntax doesn't have a default ordering matching rule, then ordering operations will not be allowed for that attribute.

An optional substring matching rule that specifies how substring matching should be performed on values of that attribute. If no substring matching rule is specified, then the default substring rule for the associated attribute syntax will be used. If the associated syntax doesn't have a default substring matching rule, then substring operations will not be allowed for that attribute.

An optional syntax OID that specifies the syntax for values of the attribute. If no syntax is specified, then it will default to the directory string syntax.

A flag that indicates whether the attribute is allowed to have multiple values.

An optional attribute usage string indicating the context in which the attribute is to be used.

An optional flag that indicates whether the attribute can be modified by external clients.